Harrow.



Patentec i' flec. 4, I900.

No. 663,06I.

H. J. CASE.

"ARROW.

(Application filed Apr. 9, 1800.)

(No Model.)

VII/IIIIIIIIIIIIIIIIIIIIIIIIllllb. 1

ilNiTnD STATES PATENT i FFICE.

HENRY J. CASE, OF OWASCO, NEW YORK, ASSIGNOR TO THE ADRIANCE, PLATT & COMPANY, OF POUGHKEEPSIE, NEV YORK.

HARROW.

SPECIFICATION forming part of Letters Patent No. 663,061, dated December 4, 1900.

Application filed April 2, 1900.

To all whom it may concern:

Be it known that 1,HENRY J. CASE, a citizen of the United States, and a residentof the town of Owasco, in the county of Cayuga, in the State of New York, have invented a new and useful Improvement in Harrows, of which the following is a specification.

This invention relates to that class of harrows in which the teeth are secured to transverse bars and which are provided with wheels mounted upon said bars. This arran gement of wheels on the tooth-bars is often used in spring-tooth harrows, and when these tooth-bars are comparatively light-for instance, when they are made of tubing-it is desirable to reinforce the tooth-bars at the points where the wheels are arranged upon them and to relieve the tooth-bars of the wear which is liable to result from direct contact of the wheel-hubs with the tooth-bar.

The object of my invention is to provide simple means for producing this result, and this object is attained by bushings of peculiar construction which are secured to the toothbar and upon which the wheel-hub turns.

In the accompanying drawings, Figure 1 is a side elevation of a harrow provided with my improvements. Fig. 2 is a top plan view thereof. Fig. 3 is a fragmentary vertical sectional View of one of the wheels and connecting parts, the section being taken in the axial line of the tooth-bar. Fig. 4 is a partly-sectional view showing a top plan of the bushings and tooth-bar and a longitudinal section of the hub of the wheel. Fig. 5 is a partlysectional side elevation showing an end view of the bushing and wheel-hub and a crosssection of the tooth-bar.

Like letters of reference refer to like parts in the several figures.

A represents the frame of one of the two sections of a butterfly harrow, in which wellknown style of harrow two of these sections are arranged side by side and hinged together.

B B B represent the tooth-bars, which are arranged transversely one behind the other in the frame. (3 represents the spring-teeth secured to these bars. The tooth-bars are journaled in the frame so that they can be turned for adjusting the teeth, and suitable appurtenances are provided for turning the 'wardly-projecting annular flange 6'.

Serial No. 11,212. (No model.)

tooth-bars and holding the same in their adjusted position, which parts are not shown, as they are well known and may be of any suitable construction.

D represents the front wheel,- which is attached to the front end of the frame, preferably by a vertical pivot in the manner of a caster-wheel.

E represents the rear wheels, which are mounted upon the rear tooth-bar B As shown in the drawings, the tooth-bars are constructed of tubing and are therefore strong and rigid, but of comparatively thin metal and light. The hub e of each rear wheel is provided at its middle with an in- The bore of the hub is somewhat larger in diameter than the external diameter of the toothbar.

F F represent two cylindrical bushings which are secured to the tooth-bar for supporting each rear wheel. These bushings project into the hub of the wheel from opposite ends thereof and are separated by the internal flange e of the hub. This flange does not bear against the tooth-bar, but is confined laterally between the inner ends of the two bushings, whereby the wheel is held against lateral displacement on the tooth-bar. The hub of the wheel turns on these bushings, which latter are held on the tooth-bar against turning by any suitable meansfor instance, as shown, by cotter-pins g, which are inserted in the tooth-bar and engage between claws 7L, projecting laterally from the outer ends of the bushings.

The ends of the wheel-hub are open and not obstructed by flanges or other projecting parts, and the hub therefore does not retain dirt which may work into the same, but enables such dirt to work out again by the rotary movement of the hub on the bushings. The parts of the wheel-support are very simple and inexpensive.

I claim as my invention- 1. The combination with the tooth-bar and the wheel having its hub arranged to surround the same, of cylindrical bushings upon which the hub turns and which are arranged in both ends of the hub and secured to the tooth-bar, and means whereby the wheel is retained against lateral displacement on the of the flange thereof, substantially as set bushings, substantially as set forth. forth. :0

2. The combination with the tooth-bar and Witness my handthis 26th day of March, the wheel having its hub provided between 1900.

' the ends thereof with an inwardly-projecting HENRY J. CASE.

flange, of cylindrical bushings upon which 7 Wit-nessesz' the hub turns and which are secured to the PIERRE M. HOWARD, tooth-bar within said hub on opposite sides 7 HOWARD A. SOMERS. 

